Automatic safety-razor



W. J. ROSS.

AUTOMATIC SAFETY RAZOR.

APPLICATION FILED ]AN.12. 1911.

1 ,306,4& 1 Patented June 10, 1919.

3 SHEETS-SHEET I W. J ROSS.

AUTOMATIC SAFETY RAZOR.

APPLICATION FILED JAN.12. I917.

W. J. ROSS.

AUTOMATIC SAFETY RAZOR.

APPLICATION FILED JAN. 12. 1917- 1,306,441. Patented June 10, 1919.

3 SHEETSSHEET 3.

J. ROSS, SACKET HARBOR, NEW YORK, ASSIGINOR OF ONE-FOURTH TO LILLIAN H. BEANE, 0F SAGKE'I HARBOR, NEW YORK.

AUTOMATIC SAFETY-RAZOR.

rsoga'er Specification of hetters Patent.

Patented June 10, 1919.

scriptionof the invention, such as will enable others skilled in the art to which it appertains to-make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification."

This. invention relates to safety razors, but more particularly to a razor of this class, in which the safety razor blade reciprocates under the influence of a motor in such manner that the cutting action of the blade is greatly enhanced.

The invention has for its object to provide a simple and efiicient safety razor, so designed and constructed that it will effeccut without the application of force applled by the hand of the user, and which will shave more rapidly and more effectually than razors of the usual safety type.

With this object in view the invention consists in'the novel construction and arrange ment of the safety razor and particularly in an arrangement for reciprocating the cutting blade with "relation to the stationary shield,

in such manner that the cutting edge of the blade is always maintained in proper rela tive relation to the effective edge of the stationary shield.

The invention further consists in certain novel details of construction and in combinations of parts, all of which will be first fully described and afterward specifically pointed out in the. appended claims.

Referring 13o the accompanying drawif I lgure 11s a side elevatlon of a safety razor, constructed in accordance with this invention.

Fig. 2 is a front elevation of the same. Fig. 3 is a similar view with theblade cover removed.

Fig. 4 is a, view partly in section illustratin the blade-holder and shield removed.

' ig. -5 is a transverse sectional view through the motor casing.

1I tlieg. 6 is a plan view of the blade holding p a,

Fig. 7 is an end elevation of the same.

Flg. 8 1s an enlarged diagrammatic view of the motor and its releasing and stopping mechanism, and

Flg. 9 is a rear elevation, illustrating the motor casing partially broken away.

Llke numerals of reference indicate the same parts throughout the several figures, in which- .1

1 indicates the safety razor having a handle 2 and blade holding devices 3, mounted on the face of a casing 1, housing a motor 5. It will be understood that the accompanying drawings illustrate a mechanical spring actuated motor of simple constructron, but it will be at once apparent that a snnple electrical motor can be employed to reciprocate the safety razor blade without departing from the scope and spirit of this invention.

The handle 2 is arranged angularly to the casing 4 and secured thereto, so as to provide for manipulation of the razor. The face 6 of the caslng 4 is rovided with a pair of oppositely disposed brackets 7, to which is applied the blade guard plate 8, having a suitable safety guarding edge 9 and provided with a pa1r of tongues 10 to receive the corner portions of the cutting edge 11 of the safety razor blade 12 in the manner as shown in Figs. 1 and 3.

The guard plate 8 is also provided at opposite edges with trunnions 13 to pivotally receive the blade covering plate 14;, which plate 14 swings on the trunnions 13, so as to from the accompanying drawings.

Pivoted on theface 6 of the casing 4, at 15 is the blade actuating lever 16, the same being provided at its lower end with an elongated slot 17 and also provided at its upper end with an elongated slot 18, bifurcating the upper end portion of the lever 16, as shown in the several figures.

Referring again to the guard plate 8, it will be seen from Fig. 3, that the same is provided transversely with an elongated slot 19, and from Fig. 1 it will be seen that the blade supporting plate 20 (shown in detail in Figs. 6 and lies directly against the flat face of the guard plate 8, the said blade and 7, that the blade supporting plate is provided centrally thereof with a rearwardly extending pin 22, and laterally of said pin 22, the said plate 20 1s provlded with a pair of outwardly pro ect1ng relatively short pins 23. The said three plns being so arranged that the central pin 22 enters the elongated slot 17 in the actuating lever 16, in such manner as is shown 1n Figs. 1 and 3, while the outwardly pro]ect1ng pins 23 enter elongated openin s 24 in the razor blade 12 in the manner as s own in Fig. 3.

Applied on the face 6 of the casing 4, as shown in Figs. 1, 2 and 3, are two spr ng fingers 25, having their free ends 26 resting against the outer edge 27 of the razor blade 12, so as to properly position the said blade 12 with respect to the guard 9.

Referring to the motor 5, reference 1s made particularly to Figs. 8 and 9. In Fig. 9 there is illustrated a coil spring 27 having its inner end fast to a shaft 28 and its outer end fast to a partitioning plate 29. The shaft 28 has fast thereon a ratchet wheel 30, engaged by a spring held pawl 31 carried. on the face of the large gear wheel 32, so that upon winding of the spring 27, by the knurled stem nut 33 (Fig. 1),tens1on 1s applied to the spring 27, and it is held against unwinding by the spring held pawl 31 and the ratchet Wheel 30. The large spur gear wheel 32 meshes'with a small pinion 33 mounted on a shaft 34, on which is also mounted a large spur gear wheel 35, meshing with a small pinion 36 rotatable with a large spur gear wheel 37, which spur gear wheel 37, meshes with a small pinion 38, mounted on a shaft 39, on which shaft 39 is also mounted a large spur gear wheel 40, which gear wheel 40. meshes with a pinion 41, mounted on a shaft 42, said shaft 42 extending through the face 6 of the casing and adding fast thereon, on the outside of said face adisk 43, having on its outer face and eccentrically thereof a pin 44, which enters the elongated slot 18 in the lever 16.

Referring now to the releasing and stopping mechanism, reference is made particularly to Figs. 4 and 8. In Fig. 4, there is shown an arm 45 pivoted at 46 within the handle 2, said arm 45 having thereon a button 47, passing through an aperture 48 in the side of the handle 2. The said arm 45 extends longitudinally through the handle 2 to rotate at a high rate o each windin and connects looseiy with a lever 49, pivoted at 50, within the casing, the'free end 51 of disposed to enter any one of the teet of the large spur ear wheel 40, as shown in Fig. 8. When the are moved in position shown in dotted lines in Fig. 8, which releases the end 51 of'the lever 49 from a tooth in the spur gear wheel 40 and allows said gear wheel 40 to rotate under the influence of the coil spring 27 thro h the intermediate 'gearin heretofore 42 at high descri ed, so as to rotate the sha speed.

Having thus described" the several parts of thls lnvention, its operation is as follows: The parts being assembled as shown and described, the motor is held against rotation by the stopping mechanism and directly by the end 51 of the lever 49. When the button 47 is depressed, the motor is released and the disk 43 and its eccentricfpin 44 are caused speed, due to the the lever 49 being bent at right-an les andv utton 47 is depressed, the parts compounded gearing of the motor. This rotation of the eccentric pin- 44, causes the lever 16 to be rapidly rocked, which causes the blade carrying plate 20, and the razor blade to be reciprocated at high speed. It is further only suiiicient to place the razor in position for shaving anddepress the button 47 and by slowly drawing over the surface to be shaved, the rapidly reciprocating blade cuts and shaves the hair instantly, without tearing or pulling, and at a higher rate of speed than can be accomplished with -razors of usual tyge. When pressure is relieved from the utton 47, the motor is stopped instantly, and by reason of the compound gearing of the motor, the same will run for a considerable length of time, at

thereof.

Fnomthe oregoing it will be seen that inasmuch as the razor blade. 12 is provided wlth the two transverse slots 24, which receive the short pins 23 of the blade supportlng plate 20, that considerable transverse movement can' be imparted to theblade 12 so as to at all times insure a proper positioning of the cutting edge 11 of the blade 12 under the tongues 10 of the guard 9, while the influence of the two spring fingers 25, lightl and resiliently bearing upon the back ed in the direction of its plane, always insures the proper parallel positioning of the cutting edge 11 of the blade 12 withrespect to the tongues 10 of the guard 9. The purpose of this construction is to provide for go 27 of the razor Made repeated sharpening of the razor blade,

which repeated sharpening of course wears away a slight portion of the blade, which wearing away, if not compensated for would result in an improper positioning of the cutting edge 11 of the blade 12 with respect to the tongues 10 of the guard 9.

As before suggested, the mechanical motor, shown and described, can be replaced by a motor of any other type, without departing from this invention, as in this present application, I do not limit myself to any particular type or style of motor, nor do I limit myself to the exact construction and arrangement of the parts, as shown and described, but consider myself clearly entitled to any and all such changes and modifications as fallwithin the limit and scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States, is

1. A razor of the type described, including a blade supporting member, a guard, a blade, means for positioning the cutting edge of the blade in parallel relation to the guard and for exerting a resilient pressure on the blade in the direction of its plane and of its cutting edge to position and maintain the cutting edge of the blade in proper parallel relation with respect to the guard, the device being provided with means to be engaged by the cutting edge of the blade to hold the said cutting edge of the blade against transverse pressure applied to the said blade, a motor, means actuated by said motor and in connection with said blade for rapidly reciprocating the said blade with respect to the said guard, a handle, "manually actuated means on said handle for controlling the operation of the said motor, substantially as described and for the purposes set forth.

2. A razor of the type described, including a blade guard, a blade, said blade being movable transversely with respect to the said guard, means for exerting a resilient pressure on the said blade in the direction of its plane and toward the cutting edge thereof vfor positioning and maintaining the cutting edge of the said blade in proper relation to the said guard, a motor, means actuated by said motor and in connection with said blade for rapidly reciprocating said blade with respect to the said guard, and means for controlling the movement of the said motor.

3. A razor of the type described, including a motor, a blade, a guard, said blade being movable transversely thereof with respect to the said guard, means for exerting a resilent pressure on the blade in the direction of its plane and of its cutting edge, the said guard being provided with means for limiting the movement of the said blade in the direction of its cutting edge under influence of the resilient pressure applied to the said blade in such manner as to position and maintain the said blade in proper relation to the said guard, and a connection between the said motor and the said blade for rapidly reciprocating the said blade.

In testimony whereof, I aflix my signature, in presence of witness.

WILLIAM J. ROSS.

Witness:

A. W. HEARN. 

